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Preface: The linking tool for arm linux can use arm-linux-ld. When linking, you can use the -T command to adopt script control. If the script is not specified, the default script file is used. See the...[Details]
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Power automatic meter reading system based on RS485 bus and Ethernet
This paper introduces an automatic meter reading system based on RS485 bus and Ethernet and implemented with con...[Details]
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As companies suffer from chip shortages, global chip manufacturers are stepping up their efforts to expand their production capacity. Intel CEO Pat Gelsinger said that he plans to build two chip fact...[Details]
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Jiwei.com reported on December 18 that today vivo announced that the new OriginOS system will make its global debut on the vivo X60 series, and together with the X60 series, it will enter a new world...[Details]
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On June 28, the 500 kV Fangshan-Nancai power transmission project and the 500 kV Xinhangcheng power transmission and transformation project were officially completed and put into operation. The pro...[Details]
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As personal computers (PCs) and televisions adopt slimmer and more elegant form factors, power supplies must reduce thickness and adapters for ultraportable computers must become compact and lightwei...[Details]
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The one used in cars is called a crossover, and the one used in homes and other occasions is called a crossover, which is basically the same in nature.
Concept of crossover
Active c...[Details]
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The calculation formula of variable frequency speed regulation includes the following aspects:
1. Frequency: The frequency of the inverter output can be calculated as follows:
Output freq...[Details]
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The maximum range of a digital multimeter for measuring AC and DC voltage is generally around 700V and 1000V, which cannot meet the requirements in some occasions. In this case, a voltage divider res...[Details]
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Synopsys recently announced that it has teamed up with Alibaba Cloud Research Center and Pingtouge Semiconductor to jointly release the cloud IC design white paper "Cloud Design, Racing Against Time"...[Details]
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As the vote on the "Hong Kong version of the National Security Law" is imminent, the U.S. Department of Commerce can no longer sit still and has issued a statement announcing that the United States w...[Details]
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Thermal micro-printers have been widely used in POS terminal systems, banking systems, mobile police systems, mobile government systems, medical equipment, car meters, handheld devices and other fi...[Details]
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Overview
Infrared thermometers measure the radiation energy of infrared rays emitted by an object to obtain the temperature of the object itself. Currently, they can be divided into thr...[Details]
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Batteries age over time, gradually losing energy and storage capacity. However, the aging process varies from battery to battery, and it is nearly impossible to measure or model all of the interactin...[Details]
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This figure shows the direct-entry wiring method of DS type 5~10A three-phase three-wire active energy meter. For three-phase three-wire active energy meters above 10A, the internal wiring is differe...[Details]